72783351101 has 2 divisors, whose sum is σ = 72783351102. Its totient is φ = 72783351100.

The previous prime is 72783351097. The next prime is 72783351107. The reversal of 72783351101 is 10115338727.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62858011225 + 9925339876 = 250715^2 + 99626^2 .

It is a cyclic number.

It is not a de Polignac number, because 72783351101 - 2² = 72783351097 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72783351107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36391675550 + 36391675551.

It is an arithmetic number, because the mean of its divisors is an integer number (36391675551).

Almost surely, 2^72783351101 is an apocalyptic number.

It is an amenable number.

72783351101 is a deficient number, since it is larger than the sum of its proper divisors (1).

72783351101 is an equidigital number, since it uses as much as digits as its factorization.

72783351101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35280, while the sum is 38.

Adding to 72783351101 its reverse (10115338727), we get a palindrome (82898689828).

The spelling of 72783351101 in words is "seventy-two billion, seven hundred eighty-three million, three hundred fifty-one thousand, one hundred one".